Steam-boiler gage-cock.



H. W. HOOVER.

Y STEAM BOILER GAGE COOK.

APPLIOATION FILED DEC. 31, 1912.

wetweowo L'Il * iTEn s HERBERT w. HoovEn; oEBAYonNE, NEW JERSEY.

STEAM-BOILER GAGE-COCK.

norasso.

Specification of Letters Patent.

Application filed December 31, 1912.

Patented Sept. 9', 1918.

Serial No. 739,448.

To all whom it may concern Be it known that I, HERBERT W. HoorER, a citizen of the United States, residing at Bayonne, in the county of Hudson and State of New Jersey, have invented new and useful Improvements in Steam-Boiler Gage- Gocks, of which the following is a specification.

This invention relates to valves, and pan ticular-ly to gage cocks and has for its object to provide an improved mounting therefor, whereby all essential elements ofthe valve may be removed and replaced by anew device embracing the complete valve without the necessity for relieving the pressure in the boiler, while it is operating underworking pressure.

' without the requirement of special tools, or

the base.

It is a purpose to permit the quick renewal of a cock in thisway without the necessity for auxiliary valve elements openative when the main valve is to be renewed, which auxiliary might itself require removal at times.

It is also an aim to make it possible to manufacture this invention at a low cost and enable its application with facility and expert training. I

Additional objects and advantages Will be apparent, someappearing from the followmg description and from the drawings, in which,

Figure 1 is a cross sectional View of the device applied to aboiler, Fig. 2 is a side View at right angles to Fig. 1, Fig 3 is a top view of the device, Fig. 4 is a plan of There is illustrated a section of a boilen 10, in which there is provided the usual threaded opening 11 for the reception'of a1 cock. It is desirable that this opening be somewhat larger than that customariiy':

' will be explained. Of a less diameter than the width of the channel .15 there is a circular recess 18 formed concentrically around the passage 14, having beveled sides 19, and fitted therein there is an annulus 20 of a metal expansible under the action of heat such as that of steam, the outer face of en which annulus is accurately finished to a plane surface parallel with the inner surfaces of the flanges 17. t p

The cock proper-comprises the casing 21 in which there maybe fitted any form of valve, the casing having an opening of smaller diameter than the annulus 20 and adapted to open therewithin when in op erative position. This opening 22 in thecasing as at present shown is of conical form and concentrically therefrom there extends the bore 23- in which is fitted revolubly the stem 22L of the hollow conical valve head 25 fitting snugly in the conical opening, which may be termed a seat. Opening atone point on this seatintermediately of its height there is an outletpassage 26, leading to and through the nozzle 27 on the side of the easingat a suitable point. The outer end of the casing is provided with stops 28 spaced at suitable distance to check the, handle 29 of the valve which is secured in asuitable manner to the outer end of the stem 24.

The casing is provided with a rectangular base 30 of suitable thickness, being of a width to snugly fit in the channcl'15 and against its sides. The edge portions at two sides are also finished to fit snugly but readily slidable against the flanges 17, when the annulus 20 engages the intermediate surface of the bottom face of th base around the conical seat. Suit-able openings 31 are formed around the base 30 registered with threaded openings 32 in the base '13, through which suitajble bolts 33 maybe engaged to or top Taco ofthe base 30 adjacent the right handend there is formed a groove 34 having a depth a little more than half thethickness of the base, and the outer edge portion outwardly of this groove is cut away parallel with the .top face of the base 30 and .Tspaced therebelow a litle less than half the thickness of this base, forming what ma be termed arib 35. The opposite or le old;the device in place. Across the outer" hand end is formed similarly except that the groove and rib 36 and 37 respectively are presented toward the bottom of the device.

By this construction the right hand side of a similarly formed was may interlock with 1w the left hand side of the cock described and as the latter is slipped out of the channel 15 the other may follow it, maintaining closed connections between the'two meanwhile,- and abutting the ring 20 snugly enough to prevent the escape of an objecge What is claimed: 1. A device of the class described comprising a base member adapted to be engaged in a boiler or the like and having a channel thereacross having inwardly projecting flanges at ,the sides, a circular recess centrally'of the channel and spaced from the ends of 'the base, a seat surface around the recess finished to an accurate plane surface, a steam passage opening from the recess through the base for communication with the interior of a boiler and a cock member including a base portion Copies of this patent may be obtained for adapted to fit snugly in the channel and under the flanges, the ends of the base portion being shaped for interlocking engagement with the ends of a similarly formed member.

2. A device of the class described comprising a base member adapted to be engaged in a. boiler, having atransversely channeled portion adapted to set without the boiler, the channeled portion having overhanging sides, in combination with a cock base having sides adapted for snug engagement s'lidably in the channeled base, the channeled base and cock base having opposed seat portions adapted to. make a steanrtight joint, the end edges of the cock base having transversely formed grooves and projections adapted for interlocking engagement with the ends of a similar member for sliding movement of the two members in the channeled base in interlocked relation, a steam passage being formed through the cock base, and valve means for closing and opening the passage.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

HERBERT W. HOOVER.

Witnesses:

GEORGE E. GRISWOLD, llIYRTLE A. REED.

five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

